Brick-kiln furnace



(No Model.) 2 Sheets-Sheet 1.

R. B. MORRISON.

BRICK KILN IE'URNAGE.`

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No. 512,891..v

(No Mod-e1.)

` 2 sheets-sheep 2.

R. B. MORRISON.

yBRICK KILN PURNAGE.

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UNITED STATES PATENT OEEIoE.

ROBERT R. MORRISON, OF ROME, GEORGIA.

BRICK-KILN FU RNACE.

SIEEGIFICAIIONv forming part of Letters I atent No. 512,891, dated January 16, 1894.

y Application filed March 22, 1893. Serial No. 467,162. (No model.)

To a/ZZ whom t may concern:

Beit known that I, ROBERT B. MORRISON, a citizen of the United States, residing at Rome, in the county of Floyd and State of Georgia, haveinvented certain new and useful Improvements in Brick-Kilns, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to improvements in kilns for burning brick and similar articles, and it is designed particularly as an improvement on that class of kilns for which Letters Patent were granted to me March 9,1886, and

numbered 337,696.

The invention has for its object to provide means whereby a more thorough heating of the kiln is secured, and to so arrange the heating and Ventilating iiues that the distribution of the heat in the kiln may be regulated.

In the drawingsz-Figure l is an elevation of the kiln showing the furnace in section. Fig. 2 is a horizontal sectionalview on line 2 2 of Fig. 1. Fig. 3 is a longitudinal sectional view of the furnace and adjoining kiln wall; and Fig. 4t is a transverse section of the furnace on line 4-4 of Fig. 3. v

Referring to the parts by letter, a designates the furnace; b the grate therein; c the inner arch of iire brick; d the outer arch of brick, and c the air space between. the inner and outer arches.` This air space begins at the base of the arch and extends entirely over it; and it extends from near the front wall of the furnace to the rear end thereof. This arch may be built in any manner, though the simplest way seems to be to first build the inner arch of re brick, then lay lengthwise over said arch a layer of boards one inch (1.) high by two inches (2) wide, and then turning the outer arch over the boards, and then removing-the boards, leaving an air space between the arches of one inch in height. This air space is closed at its front end, and at its rear end it opens into the combustion chambers f f which are formed in the kiln wall on each side of the furnace.

gis the kiln wall; h, 71. and h are eyes formed in this wall the center eye h opening at its front end directly into the furnace, and the eyes h, h opening into the combustion cham.-

bers ff.

c' z' are two air inlet pipes which are placed in the 'furnace walls near the front ends thereof. These pipes enter the furnace walls at the grate level, and extend up said walls behind the fire brick lining thereof, and then follow the curve of the arch, their upper closed ends meeting in the center thereof. These pipes are thus made and placed in the walls separately in order that they may be easily handled, and made to conform to the curvature of the arch without straining or breaking them. e

j, j are small pipes which enter the arched portion of the main pipes i and extend forwardly into the air-space e, and conduct the iniiowing air from the inlet pipes z' into said air space. v v

lo k'are the cold air inlet flues which are formed in the furnace wall proper at one side of the eyes formed therein, and extend above said eyesg-Z Z are openings from said ues into the eyes, said Openings being formed near the upper lend of the eyes.

vm m are wall-fines which are formed on the inner side of the kiln wall and extend np-` wardly from the top of the eyes.

n n are passages leading the fines lo at their upper ends into the wall-iiues m, said passages being about nine feet (9') above bottom of eye.

o, o are dampers which are placed in the flue 7o between the openings into the eyes and the passages n n, said dampers being operated from the outside of the kiln in any sultable manner. The cold air ues 7c extend to the bottom of the kiln and are carried by horizontal passages to the outer side of the kiln, the outer ends of said passages being provided with suitable regulating valves.

The operation of my improved kiln isk as followsz-Air is drawn into the air .space e through the pipes il and small pipes j, and is heated to a high temperature by the hot iirebrick arch c and then passes rearwardly into the combustion chambers and from there into the kiln through the eyes h. The inlet openings of the pipes i are placed low in the furnace walls in order to secure the proper draft to carry the hot air in the air space into the combustion chambers. that a constant draft of hot air into the kiln is secured without causing said air to pass through the furnace, and that the heat of the IOO It will'thus be seen i fire brick arch is utilized.

Hot air from the eyes 1n the kiln wall is drawn up the wallliue m, and when it is desired to throw all the heat from the eyes directly into the kiln, the dampers o are opened, allowing the cold air from fines 7c to flow into the wall flues, produclng a down draft therein and causing the hot air to pass direct-ly into the kiln.

The quantity of cold air admitted to these i flues may be regulated by the valves in their outer ends. It will also be observed that the lntroduction of oxygen into, and mixing itwith the gases in the combustion chambers will assist free combustion of fuel.

The object of employing the iron pipes fi and placing them in the solid brick work of the furnace, and connecting them by means of the small pipes j with the air space is to evenly distribute the infiowing air over the surface of the iire brick arch and also to prevent egress of air to the air space except through the pipes j, which could not be conveniently done with a brick Hue.

Having thus fully described my invention, what I claim isl. A brick kiln consisting of a kiln and a furnace, said furnace having an air space, as e, over the arch thereof, this air space communlcating at its rear end with the kiln, an air-inlet iiue having its lower open end below the lower end of said air-space its upper portion following the curvature of the arch and communicating with the air space at intervals throughout its curved portion, said flue being located at the front end of the air-space, substantially as described.

2. A brick ,kiln consisting of a kiln, and a furnace connected thereto by combustion chambers and eyes, the furnace being formed with the air space e which is closed at its front end, its rear end communicating with the combustion chambers, air inlet pipes i entering the furnace wall below the air space, and on each side thereof, their upper portions following the arch ofthe furnace, small passages communicating at intervals with the arched portion of pipes 't' and extending into theair space, substantially as described.

3. A kiln consisting of a furnace and a kiln, combustion chambers formed in the kiln wall and opening into the furnace, eyes connecting the furnace and combustion chambers to the kiln, and wall flues, as m, formed in the inner i side of the kiln wall and extending upwardly from the top of the eyes, substantially as described.

4. A kiln consisting of a series of eyes leading from the heating chamber to the drying chamber, wall-flue fm formed on the inner side `of the kiln wall and extending upwardly from the top of the eyes, cold air flues extending from the open air up along side of the eyes, said iiues being carried above the eyes, openings from these flues into the eyes, passages ROBERT B. MORRISON.

Witnesses:

JAKE C. Moons, L. L. MOORE. 

